Illuminant.



P. H. WILSON,-W. SUTTON &.B. JONES.

ILLUMINANT. I

APPLICATION FILED MAR. 15. 19 7.

7.7 J I 77 Z.

Pevcy t WilSOn 813 an 13 n, OZM'HA w UNITED STATES PATENT OFFICE.

PERCY HUNT WILSON, 0F NORFOLK, VIRGINIA, AND WOODRUFF SUTTON ANDBASSET'I JONES, OF NEW YORK, N. Y., ASSIGNORS TO JAMES NORFOLK,VIRGINIA.

G. WILSON CORPORATION, OF

ILLUMINAN'I.

Patented July 9, 1918 Application filed March 15, 1917. SerialNo.155,136.

To all whom iztmay concern:

Be it known that we, PERCY HUNT WIL- SON, resident of Norfolk, Virginia,and WooDRUFr SUTTON and BASSETT JONES, residents of New York, N. Y., allcitizens of the United States, have invented certain new Improvements inIlluminants, of which the following is a specification.

Our invention relates particularly to de vices used in improving theillumination of rooms, halls, and the like.

It has for its objects to transform direct rays of light coming fromwithout an inclosure into difi'used light with a minimum loss of generallighting effect, and to provide for the concentration of such diffusedlight in certain regions of the inclosure.

The drawings show an ordinary Venetian blind, my invention beingembodied in the general structure of same. Figure 1 is a front elevationinside. Fig. 2 is a vertical cross section.

The tiltable slats 1 are arranged in the ordinary manner, with suitablemechanism for tilting and positioning them. The structure shown is aninside shutter. An outside one is equally suitable.

The outside surfaces 2 of the slats are polished and are good specularreflectors or deflectors, like a mirror. A coating is used like whiteenamel or other suitable reflecting material which will retain thelight-reflecting qualities as long as possible. The inner surfaces 3have a fiat or lightdiflusing finish. The coating is white or of lightneutral tint, preferably on lithopone base, to retain thelight-reflecting properties.

The slats may be positioned to cut ofi all direct light from theinclosure or room. All direct rays of light then impinge upon thepolished, mirror-like surfaces 2, and are reflected or ideflected uponthe light-diflusing structure gives a very large amount of eflectivelight in all parts of the room. In the ordinary proportions of slats ofVenetian blinds, the maximum amount of light is passed when the slatsare tilted just enough to cut off direct rays of light from outside.

We do not limit ourselves further than is indicated in the claims thatfollow:

We claim:

1. An illuminating device comprising a plurality of adjustablereflectors; one of said reflectors being adapted to intercept andreflect obliquely and specularly light from a given source; anotherbeing adapted to in tercept and diffuse said rays from said firstreflector.

2. An illuminating device comprising a plurality of adjustablereflectors; one of said reflectors being adapted to intercept andreflect obliquely and specularly light from a given source; anotherbeing adapted to in tercept and diffuse said rays from said firstreflector with a maximum of difiused reflected light at the pointdesired.

3. An illuminating device comprising a plurality of tiltable slatsassociated after the fashion of a Venetian blind, adapted to be tiltedto intercept all direct rays of the sun, moon, or othensource of light;the outer surfaces of said slats being adapted to give specularreflection of light; the inner surfaces being adapted to give diffusedreflection of light.

4. An illuminating device comprising a plurality of tiltable slatsassociated after the fashion of a Venetian blind, adapted to be tiltedto intercept all direct rays of the sun, moon or other source of light;the outer surfaces comprising white enamel on a ponolith base highlypolished; the inner surfaces comprising a coating of dead finish andlight neutral tint on a ponolith base.

5. An illuminating device comprising a plurality of parallel spacedslats adapted to be arranged between a source of light and an area to belighted, the faces of said slats toward the said source, having asurface adapted to specularly reflect the light upon the opposing facesof the adjacent slats and the said opposing surfaces being adapted toreflect and diffuse the light, substantially as set forth, into the areato be lighted.

6. An illuminating device comprising a plurality of parallel spacedslats adapted to be arranged between a source of light and the amountand direction of the light trans- 10 an area to be lighted, the faces ofsaid slats mitted by them may be varied.

toward the said source having a surface adapted to specular-1y reflectthe light upon the opposing faces of the adjacent slats and BASSETTJONES. V

the saidopposing surfaces being adapted to reflect and diffuse thelight, substantially as Witnesses:

set forth, into the area to be 1i hted, said JESSIE SEIDENBERG, slatsbeing connected and rotatab e whereby EVELYN ANDERSON.

